Door-operating apparatus.



P. R. FORMAN.

DOOR OPERATING APPARATUS. APPLICATION AFILED Nov. e, I9I2.

1,285, 1 00 Patented Nov. 19, 1918r 2 SHEETS-SHEET P. R. FORMAN.

DOOR OPERATING APPARATUS. APPLlcTloN FILED Nov. s. 1912.

1,285, l 00 Patented Nov. 19, 1918.

2 SHEETS-SHEU J6 AssIGNOn. To NATIONAL PANY, or NEW YORK, N. Y., AconPonATIoN or wnsr VIRGINIA.

PARIS R. FORMAN, OF CHICAGO, ILLINOIS,

DoonfoPEATINc APPARATUS.

wedcation of Letters Patent.

'Patented Nov. 1e, 1ers.

Application med November s, 1912. seria1Nb.72e,7ao.

To all whom z't may concern.'

Be it known that I, PARIS R. FORMAN, a citizen of the United States, residing at Chicago, county of Cook, State of Illinois, have This invention relates to door operating.

apparatus.

The object of the invention is to provide a construction and arangement of power actuated door operating mechanism which is simple and eicient.

A further object of the invention is Ato provide safety devicesfor use in connection with door operatin mechanism whereby in case the door in c osing encounters an lobstruction, the power motor is automatically arrested andreversed.

A further object of `the invention is to provide means for locking the door in the limit of its movement, the'lock mechanism being released automaticallv in ladvance of the operation of the door movinfr mechamsm.

Other objects of the invention will appear lmore fully hereinafter. i

The invention consists substantially in the construction, combination, location and relative arrangement 'of parts,'allv as will be more fully hereinafter s etforth, as shownin the accompanying drawings and finally pointed out in the appended claims.

In the accompanying drawing. Figure lv is a view in elevation showing a door operating mechanismembodying the principles of my invention.

fFig. 2 is a viewin end elevation of a type o door operating mechanism embodying my invention showing the same applied tol a car structure. the car struc'ure being shown in vertical section.

Fig. 3 is an enlarged broken, detail view in section showing a form of power mechanism' employed and control devices therefor embodying my invention Fig. 4 is a fragmentary view showing the action of the lock operating connections. Fig. 5 is a sectional view taken on. the line 5 5, Fig. 4 and looking in the direction of the arrows. The same part is designated by the same reference sign wherever it occurs throughout the several views.

Referring to the accompanying'drawngs,

guided to be shifted away from each other vton rods 20, 2 1. The

reference numerals 5 and 6 designatesliding door sections to the remote edges of which are' slidably connected in the usual manner operating levers, one of which is shown at 7, said levers bein pivotally mounted as indicated at 9, and eing suitably connected through links 11, 12, to a PNEUMATIG ooII-4 traveling cross head 13, designed to be opa suitable form of power mechanism. The type and construction of door shown and above referred to is of common construction, of illustrating the principles of my invention, and in the details thereof forms no part of my present invention as defined in the claims, and therefore may he varied throughout a wide range. My invention, therefore, is not to be limited or restricted to any particular constructionl or arrangement of doors or connections thereto for moving the same. Where doors of the sliding type are employed, the door sections are suspended upon rollers 14, operating on a trackwayy 15 positionedl over the doorway and in a well known manner.

The cross' head comprises the end pieces 13, which are connected together by rods 8,

erated bv or otherwise, to form a traveling frame, the

. rangement is advantageous in that it secures a well balanced action and movement and an equal distribution of the strains imposed on the motor mechanism in the accomplishment of its functions and purposes. The door operating link devices 11, 12 through which the door moving levers are operated, are connected to opposite ends of the cross head 13. This cross head is suitably mounted and longitudinally by the motor mechanism 10. to slide toward each other in closing and in opening, the link 11 is connected on one 12 1s connected on the and is selected for the purposel side of the pivot of its dooroperating lever 7, while the link Opposite side of the Where the doors are pivot of its corresponding4 lever not shown,

1n a familiar and well known manner.

In the form shown the motor mechanism comprises cylinders 16, 17 in which operate pistons 18, 19 having connected thereto pispower cylinders 16, 17 are supported at their proximate ends by a s e; 'S C 13,; @il g vmg I 5 e2 c; 0 the pilot el valve into iig 0p- A Cloe passage Ll-O lle scleuefl Coll may be le l y in my sutelyle or eomf'eiiengmele? sul from anjgr fleshed point nf cow am cleateC-l a, contlol arrangee ef mesme im accomplish- 'en leatelj; @they e almmg'efl in the -elu el Cleeefl Whenever cleile autom? le e vemmn 'the met 1, 1 l e a in nens 'will ummemcally slut Q1 we n e1 mme" li Y"elw to 'lledones and 'this movement eyllncle 3Q C 'me pilot 'ville-e h lnolnel upon the front Ylle (leere Wlnlellj m @use 'the floors i3@ apen piemel l En me petlcule ferm bilinge? nml mlangemen eliowu im accemplshng "l i the eeul7 l mount shoe ll@ upon the from anal the Yala eclge of lle dem in eleseope tlleeupon, enel i5 m Gym ulm?. the cleo: is also given longitudinal lom Cjvln e? im@ an auxiliary mme nel-L This leeg'tuclml movemenis chamlue 3"? in Wlell opem'es z pllo' valve utilized t@ accomplish le aummtc @pene v 3S adipecl lo eenfol 39, e0; loe- 'fm elle plloly mle. To ellis end l @1:0-

- and 11h@ ill-iwi@ @i2 vide "Ehe dem foy instance, with bmcles g bhe mil ille Gulex: al? reef-edjecenb its from edge and l pvotally 'he O'Lllelr: of lleee pas mount le'els 8 upon Seid bmcles, Seid sage' j 'il alle @they @pen when livers belng plwtally connected at'llel up- -ghg @Mm mh@ {@@ugg mi@ @y h?, @eher @if per ends as indicate@ et ei-9, to the Shoe e6. fis -o- Under Bemmel eonxllons the pvoted leves 3,55 Tllepl@ 8 maybe eon'tmllecl meume'nclnecl 'lo n vertical line passing Hall f uml tre-umgneically n auf; :oug'h their pointe pwotal Connection manne?, .el simple 50 with the brackets el?, as Shown in full arrmlgemen wel epe/"edm, 'le shown linee in Fig. l. "When in this normal pos- Wllezelu fed 'ille pmpeee #for v/llell senal pieces Ofexensfms 5l of sullevels 5g will be more 'fully llelelaief discussed, cm1'- LCS project below' *he pivotal poly; lleeo L' Tue mil 9i le om; of ucl bem against the edge Surface of le dem 1, lumi sloop lmn: the Telfille @Kee 50. as

' 57 to a. convenient fixed part of rocked by the shoe 46 when it is thus shifted upwardly, as above explained, is a pivoted member 52, pivotally mounted at its rear edge as indicated at 90, Fig. 2, and which, when rocked, as above explained, operates to rock a bell crank lever 53, through a link connection 54 to one of the arms of said bell crank lever, the other arm of said bell crank lever` having connected thereto a rod 55, arranged when projected endwise by the rocking movement of the bell crank lever 53 to engage and rock the lever 56 previously referred to, which is pivotallymounted as at the appara'- tus, said lever 56 being arranged, when rocked, to engage thepilot valve operating rod 60 as previously explained and move the saine to shift said p ilot valve. To this end said rod is shown as engaging lever- 56 whereby when the rod 60 is operated the lever 56 is rocked about its pivot 57.

From. this construction and arrangement it will be seen that the manual and automatic operations of the pilot valve are independent of each other.

It is desirable to provide means for locking the motor against operation and to' release the locking sired to shift the door. Thus it -is desirable to maintain the doors locked in their closed position, and the locking mechanism must be so associated that the devices which con.

trol the operation of the pilot valve 38 'also release the locking means in advance of the operation of the pilot valve when said pilot valve is operated manually, 'that -is by the solenoid controllingV means. My 4invention contemplates the provision of means and mechanism for accomplishing this result, and I have shown a construction and arrangement embodying theV principles' of my invention in this respect wherein arod 91 is provided with a lateral arm 59, which is arrangedbetween the' lever 56 and the rod 61 of the solenoid core, crates the pilot valvel 38 being located on the opposite side of said lever 56. As shown the rod 91 extends beyond the lever 56 at its extreme end and is pivotally connected to a gravity actuated locking dog 62 carried by a portion 80 ofthe frame, and pivotally s ecured thereto by a suitable pin 82, as shown best in Fig. 1. Under normal conditions the hooked end 63 of -the lookin do engages a lug 64 upon the cross hea 13, eing engagement therewith and ,hence preventing any shiftheld by gravity in locking p ing movement of the cross head 13 until the locking` dogis released from ment. This release is accomplished lby the red 91 when it is projected endwise by the solenoid, as above explained. The arm 59 such engageis located betweenv the lever 56 and the ,saler noid core rod 61 and the pilot valve operating rod 60 to insure a release of the locking mechanism when it is de-V lmunication with eachy other.

the rod 60 which opvalve chest 25;

. Thereupon t dog 62 wheneverV the solenoid is operated.

After the release of the locking dog, the pilot valve 38 is operated. In the arrangement shown in Figs. 3' and4 the rod 55 extends into position to bear against theffree end of lever 56, whereby when the rodv 55 is shifted automatically by the safety shoe the lever 56 is rocked to operate the pilot valve without affecting the lock. In other words, when the solenoid 43 is energized, the arm 59 is moved toward the right thereby moving the rod 91 and lever 56, thus releasing the locking dog 62 and operating the valve 38. When the rod 55, however, is moved toward the right, the lever 56 and consequently vaive 38 are operated without eii'ecting any operation or movement of the rod 91.

In Fig. 2 I have shown ja motor. mechanism embodying the principles of my invention located between the Wall members 66, 67 of a street car, for instance, and located above the doors in the roof portion of the car, thus illustrating .position the piston 18 would be at the extreme limit of its movement toward the left and the piston 19 at the extreme limit of its the economy of space 1 occupiedK` by the motor mechanism constructed and arranged as above described.

movement also toward the left, that is, port 24 and 28 are in com- This condition exists when the pilot valve 38 is seated in position to close passage 40 and to open passage 39.. Under these conditions the pressure of' the valve chamber 25 is equalized onV opposite sides of valve piston 31, thereby enabling the tension to be exerted to shift and hold the valve 27 in the position shown in Fig. 3. N ow supf pose it be desired toopen the door. To do this switch device 45 is operated to close the circuit of solenoid 43. Thereupon rod- 61 is projected endwise against lever 56 to move the pilot'valve 38 to force the same into its seat to close passage 39 and to open passage 40. `This permits exhaust of pressure from cylinder 32 pressure supply to said cylinder romthe hereupon piston 31 is shifted toward the left by the pressure in valve chest 25 which overcomes the tension 23 is open and ports of spring 33 and shifts valve 27 toward the to the outer air and cuts oil4 of spring 33 left so as to open port 24 to the valve chest orts 23 and 28 to each other.

and to open e cross-head 13 is shifted in the opposite direction and effects through ,n

the links 11 and 12 and their associated levers'the opening movement of the door. i

The opening movement of the door willbe arrested at any point byA merely opening 

